Strip feeding mechanism for photographic copying apparatus



March 31, 1953 R w 2,633,355

. F. STRIP FEEDING MECHANISM FOR PHOTOGRAPHIC COPYING APPARATUS Filed July 6, 1948 4 Sheets-Sheet 1 I Hllllll n. H H

March 31, 1953 R WILLS 2,633,355

F. STRIP FEEDING MECHANISM FOR PHOTOGRAPHIC COPYING APPARATUS Filed July 6, 1948 4 Sheets-Sheet 2 INVENTOR. R/cba/w A MV/s BY 0 arm/ave March 31, 1953 R. F. WILLS 2,633,355

STRIP FEEDING MECHANISM FOR PHOTOGRAPHIC COPYING APPARATUS Filed July e, 1948 4 Sheets-Sheet 5 #0 4 IHHIHIHHIH ||H1 m M |Im|-.

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* STRIP FEEDING MECHANISM FOR PHOTOGRAPHIC COPYING APPARATUS Filed July 6, 1948 4 Sheets-Sheet 4 IN VHV TOR. 03/74/27 51%? Patented Mar. 31, 1953 STRIP FEEDING MECHANISM FOR PHOTO- GRAPHIC COPYING APPARATUS Richard F. Wills, Miami, kla., assignor to Color Research, Inc., Miami, Okla.

Application July 6, 1948, Serial No. 37,275

4 illaims. (Cl. 271-23) This invention relates to the field of photography and more particularly to apparatus for reproducing images from an original strip, the primary object being to provide means for continuous reproduction of copies of lengthy records,

particularly of the type having varying colors chart is formed on an elongated strip of sheet 'material graduated longitudinally in feet with the differing strata indicated thereon in various colors. Since such colors are highly important in reading the chart, the methods heretofore used of reproducing such chart, while maintaining the colors originally placed thereon, has been tedious and time consuming.

Accordingly, the most important object of this invention is the provision of a photographic apparatus capable of receiving the elongated original chart and moving the same through a substantially rectilinear path of travel while simultaneously moving a film strip or other transfer strip to the end that reproduction can be easily and quickly accomplished through interpositioning of a lens and a reflector between the two moving strips.

Another important object of this invention is the provision of a photographic apparatus of the above mentioned character having common means for driving the two strips in synchronization, said means being provided with manually adjustable means for providing a speed differential between the two strips to'the end that compensation is provided for shrinkage of the transfer strip after the image has been reproduced thereon.

, Another important object of this invention is to. provide a photographic apparatus having common drive means for the strip having images thereon and the transfer strip upon which said images areto be reproduced, said driving means being-provided with structure for rendering the i same more effective upon one of the strips than u th'e other as desired by the operator, all to the T end that a speed differential in the strip movements is provided.

, Other objects of this invention relate to details manner of providing pairs of opposed rollers for receiving and moving the two strips, one roller of each pair having common means for holding the same in clamped relationship to the opposed roller respectively and additional means independent thereof for shifting one of the rollers more tightly against its opposed roller, the opposed rollers being of compressible material to the end that the effective area thereof is decreased by operation of the shifting means.

Other objects will be made clearor become apparent as the following specification progresses, reference being had to the accompanying drawing, wherein:

Fig. l is a normally front elevational view of photographic copying apparatus made in accordance with the present invention.

Fig. 2 is a top perspective view thereof, parts of the cabinet being displaced to reveal details of construction.

Fig. 3 is a perspective view showing one end of the apparatus opposite to that illustrated in Fig. 2 but without the strip of material 10.

Fig. 4 is a fragmentary transverse cross sectional view taken on line IV-IV of Fig. 2.

Fig. 5 is an enlarged detailed end elevational view of the retarding means for the original strip from which images are to be reproduced.

Fig. 6 is a transverse cross sectional view taken on line VI.VI of Fig. 8.

Fig. 7 is a fragmentary cross sectional View taken on line VII-VII looking in the direction of the arrows; and

Fig. 8 is a top plan view of the actuating assembly for the strips, said Fig. 8 being partially in section and partially schematic.

In Fig. 1 an elongated strip of material, broadly designated by the numeral [0, is shown operably threaded in the photographic apparatus forming the subject matter of this invention. As above stated, this original strip I0 is graduated as at l2 indicating the depth of the well in feet and having the earth strata indicated thereon in colors between the spaces set forth by such graduations [2. Suitable indicia is also printed upon one face of this strip 10 as explanatory of certain conditions of the particular well thus recorded.

Strip l D is originally disposed face downwardly within an elongated flat channel Hi disposed horizontally upon a table or other supporting surface [6. From the channel l4, strip lil passes beneath a roller l8 bearing against strip It by its own initial weight. This roller I8 is mounted of construction and particularlyto the precise to for vertical swinging movement by means of a,

. narily substantially the same. Such tapes I and cause of the fact that the sensitized material from which the tape is made will ordinarily stretch while the same moves from the reel 54 to the reel 56 with a resultant shrinkage after the image from tape I6 has been projected thereon. Furthermore, a slight shrinking always takes place when the film strip 58 is subsequently processed. Accordingly, it is. absolutely essential that there be a differential between the speeds of travel between tapes I and 56 and means is provided to decrease the effective area of roller 56 for tape it! tothe end that the latter travels at a slightly slower speed than the speed of travel of tape 58. Such means includes a sleeve H4 circumscribing the reduced end of shaft 94 adjacent bearing 98 and eccentrically disposed relative thereto as .clearly indicated in Fig. 6 of the drawing.

, It is noted in Fig.4 of the drawings that a type of camera.

I of opposed rollers 48 and 56 therefor, a brake broadly designated by the numeral I34, is provided 4 for roller I6. This brake I34 illustrated in Fig.

This sleeve" i M serves as a bearing for the shaft 64 and is freely rotatable within an opening I I6 in bearing 98. The innermost end of this sleeve H4 has secured thereto a gear 5 W, said gear H8 having no connection whatsoever with shaft 94.

A pin I26 having a knurled knob I22 on one end thereof passes through the bearing 98 in substantial parallelism with the axis of rotation of shaft 94 and has a pinion I24 on that end thereof opposite to knob 422 that is in mesh with the relatively large gear H8.

Rotation of the pin I26 causes rotation of the sleeve I I4 with a resultant movement of the proximal end of shaft 64 together with the roller 48 toward and away from roller 56 independently of the operation of cam I64 and the centrallydisposed laterally projecting arm I62. t is realized that such movement of the shaft 94 by operation of pin I26 also causes a slight movement of roller 68 toward and away from its opposed roller 66 but this last-mentioned movement is only slight and it is definitely possible to reduce the effective area of roller 56 through use of the structure operated by rotation of pin I26. Since the movement of shaft 94 and roller 43 is only slight, a slightly loose fit Within bearing 96 for shaft 94 is all that is necessary to permit such movement. Roller 56 is made from rubber or other compressible material and, therefore, as shown in Fig. '7, inward movement of roller 48 toward roller 55 will press the latter inwardly to an extent dependent on the position of eccentric II 4 and bearing 98.

As indicated in Fig. 2 of the drawings, the substantially vertical path of travel of tape 58 adjacent the pressure plate 62 and the rectilinear vertical path of travel of tape I6 along one face of plate 26 are substantially parallel. In other words, at these two points, the tape I0 and the tape 58 have their longitudinal axes in parallelism but their transverse axes are perpendicular. Accordingly, in order to transfer the image between rollers 36 that is imprinted upon one face of the tape I 6 to that portion of tape 58 adjacent pressure plate 62, it is necessary to provide an upstanding reflector in the nature of a mirror or the like I26. Fig. 2 is clear to the effect that this mirror I26 is disposed at an angle displaced substantially degrees with respect to both tapes I0 and 58. The image from tape I 0 is thus reflected by the mirror I26 into a lens I28 mounted upon one face of the cabinet 52 with its longitudinal axes perpendicular to tape 58 and in alignment with that portion thereof disposed along the pressure plate 62.

5 of the drawing, constitutes a flexible band I36 looped about a portion of the roller I6 and having one end thereof secured directly to the supporting framework of the roller I8; The opposite end of the flexible band I36 is secured directly to a bolt I36 having a nut I46 for manually increasing and decreasing the tension which this band I36 applies to the roller I8. Similarly,'Fig; 3of

the drawings, details the means for yieldably holding the reel 54 against free rotation and thereby maintaining tape 56 tightly stretched between such roller 54 and the roller 56. Such means includes a collar I42 threaded about a shaft M4 for the reel 54 and a vertical pin I46.

Pin I45 extends upwardly through the cabinet 52 and projects into the collar I42 for frictional engagement with the shaft I44. This pin I46 is adjustable vertically and any suitable means may be provided at the innermost end thereof within the collar I42 for yieldably holding a plug or the like of frictional material against the shaft I 44.

Inasmuch as the original tape I6 has colors thereon for indicating the different types of earth strata formin the oil well, suitable emulsions are applied to the tape 58 to the end that the finished copy may be developed in the precise colors appearing on he original tape I6. After the entire length of tape It has been exposed and projected to the tape 56, the same may be again directed through its path of travel since such tape passes downwardly from the opposed rollers 46 and 56 therefor through a slot I46 formed in a base I50 for the entire apparatus which rests upon the table top I6.

Manifestly, all the aims and objects initially set forth herein can be attained through use of the apparatus forming the subject matter of this invention and the problem with respect to making a large number of copies of lengthy records and documents, has been solved.

While only one embodiment of the present invention has been illustrated and described, it is understood that all modifications thereof which fairly come within the scope of the appended claims are contemplated hereby.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In photographic copying apparatus, a ro-= tatable shaft; a pair of spaced, primary, resilient rollers mounted on the shaft for rotation therewith, a rotatable control shaft pivoted at one end for swinging movement toward and away from the primary rollers; a number of lateral extensions fixed to the control shaft; a secondary roller for each primary roller respectively rotatably carried by said extensions; a laterally extending arm fixed on the control shaft intermediate the ends thereof; a wedge member reciprocable toward and away from the rollers and engageable with said arm for swinging the second- 9Z1? rollers toward the "primary rollers whereby to clamp sheets of material between the primary rbllers' and secondary rollers; a rotatable eccentrio rbtatably receiving the control shaft at the other end of the latter; and means connected with said cbiitrib f9?! 'rbtatihg thelatter'to swing the control shaft and thereby the 'see'onaary roln ers toward and away from the primary rollers.

2.111 photographic copying apparatus as set forth in claim 1, wherein is provided a screw intatably connected with said wedge member for reciprocating the ame, there being a stationary, internally screw-threaded br'aeket 'fOr receivin the screw, I

3. In phetiig'rap'hie cois'ying apparatus as set fifth in claim 1, whe'rem said means inbi'fld a pair or ihter'meshing gears, zine bf said gears be n connected with the eccentric.

, 8 pair of intermeshing gears one Of said gears being connected with the eccentric, and a pin attached to the other gear for rotating the latter.

RICHARD F. WILLS.

REFERENCES CITED The fpllowing references are of record in the file of this patent:

UNITED STATES EQATENTS Number Name Date 889,746 Beckma'n June 2, 1908 1,115,828 Johnston Nov. 3, 1914 1,235,805 Jennings Aug. 7, 1917 1,460,20 Masl'and June 26, 1923 1,802,530 Pilny Apr. 28, 1931 1,822,992 Osborne Sept. 15, 1931 1,836,691 Tuttle 'Dec. 15, 1931 2,428,681 Pratt Oct. 7, 1947 

